查询词典 Bessemer converter

Based on solving the coupler mode equarions of PPLN wavelength converter, the scheme of controlling the PPLN wavelength converter using electrooptical effect is proposed for the first time.

分析了PPLN波导中基于级联倍频与差频全光波长变换特性，在模拟求解PPLN倍频耦合波方程的基础上，提出了这种器件的电光调控方案，并首次论证了作为电光开关的可能性。

They are soft starter , frequency converter and brushless -ringless converter.

为此，介绍了软启动器、变频器、无刷无环启动器的特点和技术演变过程，以及在城市供水系统中的应用。

Based on the working principle of fuzzy control and characters of soft-switching technology, it applies fuzzy control to soft-switching power converter and designs a normal fuzzy controller for SEPIC power converter introduced former. By simulating the fuzzy control system,it validates the availability and rationality of this fuzzy controller.

根据模糊控制的工作原理和软开关技术的特点，将模糊控制引入到软开关功率变换器中，为前面介绍的 SEPIC 功率变换器设计常规模糊控制器，并进行了仿真分析，得出仿真结果，验证了该模糊控制器的有效性及合理性。

Setting zero-current switching quasi-resonant SEPIC converter as example, it analyzing the switching mode of SEPIC converter in detail based on the instance of switches' on-off.

以零 电流开关准谐振 SEPIC 变换器为例，根据开关管的通断情况，详细分析了 SEPIC 变换器的开关模态。

The pump and torque converter are positioned along a common axis of rotation, the pump circumscribing the torque converter hub to reduce axial space.

所述泵和变矩器沿着共同的旋转轴线定位，所述泵环绕变矩器毂以减少轴向空间。

Through analyzing the topology, control system and protection system of large power high voltage converter equipped with integrated gate commutated thyristor, a set of 7.5 MVA three-level neutral point clamped converter was designed.

通过对大功率集成门极换向晶闸管高压变流器的结构、控制系统、保护系统的研究，设计出一套7.5MVA的基于集成门极换向晶闸管的高压三电平中点箝位变流器。

The relationship between currents of Filter Commutated Converter and the harmonic characteristics of multifrequency AC/DC interconnected systems based on New-Type converter transformer have been studied with ideal models by means of theoretical analysis and matlab simulation.

采用理想化的研究方法，通过理论分析和MATLAB仿真对滤波换相换流器的电流变换关系以及基于新型换流变压器的多基频交直流互联系统的谐波特性进行了系统的研究。理论分析和数字仿真结果均说明了基于新型换流变压器的换相换流器—滤波换相换流器在谐波特性方面的优越性

Taking the particularity of the connection scheme of novel converter transformer and its filter system into account, it's necessary to find out the relation between its commutated reactance and short-circuit impedances between windings and fundament frequency impedance of filter branch for impedance design of novel converter transformer and reactive power ...

考虑到新型换流变压器及其滤波系统的接线方案较为特殊，了解其换相电抗与绕组之间的短路阻抗及阀侧滤波支路的基频阻抗之间的关系，对新型换流变压器的阻抗设计和阀侧无功补偿度的优化配置是十分必要的。

Taking the development platform of HVDC power transmission for example, the calculation result of impedance-frequency characteristic of traditional line commutated converter and that of FCC are compared. Simulation results show that the impact of impedance-frequency characteristic of converter on the resonance frequency of AC system is not negligible, and FCC can enhance the strength of AC system in a certain extent, improve system stability and effectively reduce AC equivalent impedance under resonance frequency, thus the harmonic instability of HVDC power transmission system can be avoided.

以直流输电开发平台为例，对传统电网换相换流器(line commutated converter，LCC)与FCC的阻抗频率特性计算结果进行对比，仿真结果表明换流器的阻抗频率特性对交流系统的谐振频率有着不可忽略的作用，FCC在一定程度上提高了交流系统强度，改善了系统稳定性，有效降低了系统谐振频率下的交流等值阻抗，从而更好避免直流输电系统谐波不稳定现象的发生。

Critical aspects on the use of the Δ∑ A/D converter described in the paper including :the necessary of using the highly integrated Δ∑ A/D converter in portable Sunphotometer, the principle diagram interfacing CS5528 to 89C52,the software of initialing CS5528 and the results of experiment.

本文介绍了便携式太阳辐射计的组成原理，分析了在便携式太阳辐射计中使用高集成度Δ∑型A/D转换器的必要性，给出了高集成度Δ∑型A/D转换器CS5528与系统微处理器的连接图、测量初始化程序及模拟测量结果。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。